FREE STANDING JIB CRANES
360° rotation, Allows for electrified, motor driven, powered rotation through various collector ring assemblies, The boom or I-beam is designed to meet all specifications utilizing a 25% factor of rated load for impact and 15% of rated load for hoist and trolley weight, The pipe mast or column is designed to give maximum strength and minimum deflection to resist bending, buckling, and crushing as well as wear by the trunnion roller assembly, The top bearing assembly utilizes a Timken tapered roller bearing provided with a grease fitting for proper lubrication, The bearings are designed for a 5000 hour, B-10 design life.

Head assembly
• Constructed of standard plate, angles, and channels to ensure minimum deflection and maximum rigidity.
• The plates are reinforced using angles to limit compression and buckling stresses.
• The lower trunnion roller assembly is mounted on a channel which transfers the load from the top of the box.
• The head assembly is designed to inhibit dislodgment due to upward and forward motion. It allows bottom entry electrification inside the head and will also allow mounting above the boom for top entry electrification.

Base Plate Mounted
• Utilizes a hexagonal base plate reinforced with six knee braces equally spaced on the circumference of the mast.
• The base plate assembly is secured by means of anchor bolts to a prescribed reinforced concrete foundation, with the number of anchor bolts varying with the capacity of the crane.
• Six bolts are used for columns less than 16" in diameter and 12 bolts for columns 16" in diameter and greater.